1153943478 has 12 divisors (see below), whose sum is σ = 2500210908. Its totient is φ = 384647820.

The previous prime is 1153943477. The next prime is 1153943503. The reversal of 1153943478 is 8743493511.

1153943478 is a `hidden beast` number, since 1 + 1 + 539 + 43 + 4 + 78 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153943471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32053968 + ... + 32054003.

It is an arithmetic number, because the mean of its divisors is an integer number (208350909).

Almost surely, 2^1153943478 is an apocalyptic number.

1153943478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1153943478 is an abundant number, since it is smaller than the sum of its proper divisors (1346267430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1153943478 is a wasteful number, since it uses less digits than its factorization.

1153943478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64107979 (or 64107976 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1153943478 is about 33969.7435668861. The cubic root of 1153943478 is about 1048.8857349617.

The spelling of 1153943478 in words is "one billion, one hundred fifty-three million, nine hundred forty-three thousand, four hundred seventy-eight".